# import gradio as gr
# model_name = "models/THUDM/chatglm2-6b-int4"
# gr.load(model_name).lauch()
# %%writefile demo-4bit.py
from textwrap import dedent
# credit to https://github.com/THUDM/ChatGLM2-6B/blob/main/web_demo.py
from transformers import AutoModel, AutoTokenizer
import gradio as gr
import mdtex2html
from loguru import logger
model_name = "THUDM/chatglm2-6b"
model_name = "THUDM/chatglm2-6b-int4"
tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True)
# model = AutoModel.from_pretrained(model_name, trust_remote_code=True).cuda()
# 按需修改，目前只支持 4/8 bit 量化
# model = AutoModel.from_pretrained("THUDM/chatglm2-6b", trust_remote_code=True).quantize(4).cuda()
import torch
has_cuda = torch.cuda.is_available()
# has_cuda = False # force cpu
if has_cuda:
model = AutoModel.from_pretrained(model_name, trust_remote_code=True).cuda() # 3.92G
else:
model = AutoModel.from_pretrained(model_name, trust_remote_code=True).half() # .float() .half().float()
model = model.eval()
_ = """Override Chatbot.postprocess"""
def postprocess(self, y):
if y is None:
return []
for i, (message, response) in enumerate(y):
y[i] = (
None if message is None else mdtex2html.convert((message)),
None if response is None else mdtex2html.convert(response),
)
return y
gr.Chatbot.postprocess = postprocess
def parse_text(text):
"""copy from https://github.com/GaiZhenbiao/ChuanhuChatGPT/"""
lines = text.split("\n")
lines = [line for line in lines if line != ""]
count = 0
for i, line in enumerate(lines):
if "```" in line:
count += 1
items = line.split('`')
if count % 2 == 1:
lines[i] = f'<pre><code class="language-{items[-1]}">'
else:
lines[i] = f'<br></code></pre>'
else:
if i > 0:
if count % 2 == 1:
line = line.replace("`", "\`")
line = line.replace("<", "<")
line = line.replace(">", ">")
line = line.replace(" ", " ")
line = line.replace("*", "*")
line = line.replace("_", "_")
line = line.replace("-", "-")
line = line.replace(".", ".")
line = line.replace("!", "!")
line = line.replace("(", "(")
line = line.replace(")", ")")
line = line.replace("$", "$")
lines[i] = "<br>"+line
text = "".join(lines)
return text
def predict(input, chatbot, max_length, top_p, temperature, history, past_key_values):
chatbot.append((parse_text(input), ""))
for response, history, past_key_values in model.stream_chat(tokenizer, input, history, past_key_values=past_key_values,
return_past_key_values=True,
max_length=max_length, top_p=top_p,
temperature=temperature):
chatbot[-1] = (parse_text(input), parse_text(response))
yield chatbot, history, past_key_values
def trans_api(input, max_length=4096, top_p=0.8, temperature=0.2):
try:
res = model.stream_chat(
tokenizer,
input,
history=[],
past_key_values=None,
return_past_key_values=False,
max_length=max_length,
top_p=top_p,
temperature=temperature,
)
logger.debug(f"{res=}")
except Exception as exc:
logger.error(exc)
def reset_user_input():
return gr.update(value='')
def reset_state():
return [], [], None
with gr.Blocks(theme=gr.themes.Soft()) as demo:
gr.HTML("""<h1 align="center">ChatGLM2-6B-int4</h1>""")
with gr.Accordion("Info", open=False):
_ = """
A query takes from 30 seconds to a few tens of seconds, dependent on the number of words/characters
the question and answer contain.
* Low temperature: responses will be more deterministic and focused; High temperature: responses more creative.
* Suggested temperatures -- translation: up to 0.3; chatting: > 0.4
* Top P controls dynamic vocabulary selection based on context.
For a table of example values for different scenarios, refer to [this](https://community.openai.com/t/cheat-sheet-mastering-temperature-and-top-p-in-chatgpt-api-a-few-tips-and-tricks-on-controlling-the-creativity-deterministic-output-of-prompt-responses/172683)
If the instance is not on a GPU (T4), it will be very slow. You can try to run the colab notebook [chatglm2-6b-4bit colab notebook](https://colab.research.google.com/drive/1WkF7kOjVCcBBatDHjaGkuJHnPdMWNtbW?usp=sharing) for a spin.
The T4 GPU is sponsored by a community GPU grant from Huggingface. Thanks a lot!
"""
gr.Markdown(dedent(_))
chatbot = gr.Chatbot()
with gr.Row():
with gr.Column(scale=4):
with gr.Column(scale=12):
user_input = gr.Textbox(show_label=False, placeholder="Input...", lines=10).style(
container=False)
with gr.Column(min_width=32, scale=1):
submitBtn = gr.Button("Submit", variant="primary")
with gr.Column(scale=1):
emptyBtn = gr.Button("Clear History")
max_length = gr.Slider(0, 32768, value=8192/2, step=1.0, label="Maximum length", interactive=True)
top_p = gr.Slider(0, 1, value=0.8, step=0.01, label="Top P", interactive=True)
temperature = gr.Slider(0.01, 1, value=0.95, step=0.01, label="Temperature", interactive=True)
history = gr.State([])
past_key_values = gr.State(None)
submitBtn.click(predict, [user_input, chatbot, max_length, top_p, temperature, history, past_key_values],
[chatbot, history, past_key_values], show_progress=True, api_name="predict")
submitBtn.click(reset_user_input, [], [user_input])
emptyBtn.click(reset_state, outputs=[chatbot, history, past_key_values], show_progress=True)
with gr.Accordion("For Translation API", open=False):
input_text = gr.Text()
tr_btn = gr.Button("Go", variant="primary")
tr_btn.click(trans_api, [input_text, max_length, top_p, temperature], [], show_progress=True, api_name="tr")
# demo.queue().launch(share=False, inbrowser=True)
# demo.queue().launch(share=True, inbrowser=True, debug=True)
demo.queue().launch(debug=True)